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(2/4)ur people sit in the waiting-room.He has to wait for his turn.He d

分类: 作业答案 • 2023-01-22 17:11:15

问题描述：

(2/4)ur people sit in the waiting-room.He has to wait for his turn.He d

答

sit----sitting
find sb doing sth 发现某人正在做某事